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Appropriate equipment for measuring the rate of a reaction

Quiz by Oak National Academy: GCSE Combined Science OCR Foundation

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6 questions
Show answers
  • Q1
    Which equipment is suitable for measuring the percentage of light transmitted through a reaction producing a precipitate?
    thermometer
    gas syringe
    stopwatch
    light sensor
    upturned measuring cylinder
    30s
  • Q2
    When is an upturned measuring cylinder suitable for measuring gas volumes in a reaction?
    when the gas produced has a colour
    when the reaction produces small volumes of gas rapidly
    when the reaction produces large volumes of gas at a slow rate
    when the gas needs to be collected over water
    30s
  • Q3
    What should be considered when selecting the size of measuring equipment for gas volumes?
    it should be smaller than expected to save space
    it should be adjustable to accommodate different reactions
    it should be close to the expected volume of gas produced
    it should be larger than expected to avoid overflow
    30s
  • Q4
    Why are gas syringes considered ideal for measuring small volumes of gas with high precision?
    they can measure gases at high temperature
    they are transparent and easy to read
    they have small graduations and are designed to prevent gas escaping
    they are less expensive than other equipment
    30s
  • Q5
    If a reaction in an open system produces a gas, what can be measured to determine the rate of reaction?
    the temperature change of the reaction mixture
    the increase in volume of the reaction mixture
    the decrease in mass of the reaction mixture over time
    the color change of the reaction mixture
    30s
  • Q6
    In a reaction that produces a gas, what happens to the volume of gas produced per second as the reaction progresses?
    it remains constant
    it increases and then remains constant
    it increases continuously
    it decreases
    30s

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